Tool bit



FIG. 1 is a perspective view of a tool bit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the tool bit in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a tool bit, as shown and described. 